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Extreme klinefelter is an example of _____________________(a) Monosomy(b) Trisomy(c) Disomy(d) TetrasomyThis question was posed to me in a job interview.The query is from Chromosomal Abnormalities : Aneuploidy in section Chromosomal Basis of Inheritance of Cytogenetics

Answer»

Right choice is (d) Tetrasomy

The best explanation: In extreme klinefelter the chromosomal constitution is 44+XXXY, there are TWO extra X CHROMOSOMES which LEADS to more severe Klinefelter condition. THUS, it is tetrasomy.



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